30 April - 1 May 2019
Tottenham Hotspur – AFC Ajax
Referee: Antonio Mateu Lahoz (ESP, photo)
Assistant Referee 1: Pau Cebrian Devis (ESP)
Assistant Referee 2: Roberto Diaz Perez (ESP)
Fourth Official: Alberto Undiano Mallenco (ESP)
VAR: Alejandro Hernandez Hernandez (ESP)
AVAR: Juan Martinez Munuera (ESP)
Referee Observer: Herbert Fandel (GER)
FC Barcelona – FC Liverpool
Referee: Björn Kuipers (NED)
Assistant Referee 1: Mario Diks (NED)
Assistant Referee 2: Erwin Zeinstra (NED)
Fourth Official: Anastasios Sidiropoulos (GRE)
VAR: Danny Makkelie (NED)
AVAR: Pol van Boekel (NED)
Referee Observer: Bo Karlsson (SWE)